QX9300 recognized as ES


New Member
Hi to all!!

Maybe you can help me....

I bought an apparently OEM Intel Core 2 Extreme QX9300 cpu.

As you can see from the last image on this page:
<!-- m --><a class="postlink" href="http://www.webrevolver.it/qx9300/qx9300.html">http://www.webrevolver.it/qx9300/qx9300.html</a><!-- m -->

the cpu seems to be an oem one, with SLB5J sign.

But all the cpu recognize utilies says that this one is ES....
As you can see i used also the original Intel application.

I need some clarifications!

& which is the last cpu stepping od this cpu? (& where can i find a list of all stepping of all cpus???)

Thanks in advance!
I have no 100% explanation for this. I have checked some dumps I have on this CPU (with the same uCode update revision) and they all have the Production flag properly set. Since the CPU is properly marked as a Production Part with a SSPEC, it might be a bug in the internal flag.
In either case, such kind of information is proprietary, so I think the best way would be to contact Intel directly.
E0 is the latest stepping for Penryn CPU and I don't think there's a complete list of all steppings available for all CPUs (since certain steppings are not for public). You might want to browse the Intel ARK database (ark.intel.com) for the most of public CPUs, or this database: <!-- m --><a class="postlink" href="http://www.cpu-world.com/CPUs/">http://www.cpu-world.com/CPUs/</a><!-- m -->
Thanks Martin!

I'll contact Intel for further explanation...

I have another question for you.

Can you explain me the numbers signed on this image?
<!-- m --><a class="postlink" href="http://www.webrevolver.it/qx9300/qx9300_signed.jpg">http://www.webrevolver.it/qx9300/qx9300_signed.jpg</a><!-- m -->

The "A" one is equal to another image that i found on google images.

Is that the HW revision? I think so because in this image (<!-- m --><a class="postlink" href="http://www.webrevolver.it/qx9300/same_numb.jpg">http://www.webrevolver.it/qx9300/same_numb.jpg</a><!-- m -->) there are 4 CPU with equal "A".

The "B" one is equal on all the CPU that i found.

And the "C" one is different sometimes... On my CPU, as you can see there is a "YC..." (that is the same of this ES one: <!-- m --><a class="postlink" href="http://www.webrevolver.it/qx9300/es.jpg">http://www.webrevolver.it/qx9300/es.jpg</a><!-- m --> ).

The strange thing is that, this one (<!-- m --><a class="postlink" href="http://www.webrevolver.it/qx9300/b726.gif">http://www.webrevolver.it/qx9300/b726.gif</a><!-- m -->), has same "A" but different "C".

Do you think that that "YC" is an ES marker?

Thanks again!!!
A is probably the Intel MM#, but I have no idea about B and C. That might be some internal code that only Intel can decipher..